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en-usPhys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.http://cdn.phys.org/tmpl/v4/img/phys.org.140.pngPhys.orghttp://phys.org/
Greenland ice cores show industrial record of acid rain, success of US Clean Air ActThe rise and fall of acid rain is a global experiment whose results are preserved in the geologic record.http://phys.org/news316426760.html
EarthFri, 11 Apr 2014 09:20:29 ESTnews316426760Free rides to combat pollution in France, BelgiumAir pollution that has turned the skies over Paris a murky yellow and shrouded much of Belgium for days forced drivers to slow down Friday and gave millions a free ride on public transportation.http://phys.org/news314032815.html
EarthFri, 14 Mar 2014 16:30:01 ESTnews314032815Nitrogen fertilizer remains in soils and leaks towards groundwater for decadesNitrogen fertilizer applied to crops lingers in the soil and leaks out as nitrate for decades towards groundwater – "much longer than previously thought," scientists in France and at the University of Calgary say in a new study.http://phys.org/news301587026.html
EarthMon, 21 Oct 2013 15:10:39 ESTnews301587026Making things cold: A history of science, technology and cultureOur ancestors first created ice by dissolving 'saltpetre' (potassium nitrate) in water and then pouring the mix into long-necked bottles that were then rotated. Since then, people have sought new ways to keep food cool.http://phys.org/news297676026.html
Other SciencesFri, 06 Sep 2013 09:20:01 ESTnews297676026Strangers invade the homes of giant bacteriaLife is not a walk in the park for the world's largest bacteria, that live as soft, noodle-like, white strings on the bottom of the ocean depths. Without being able to fend for themselves, they get invaded by parasitic microorganisms that steal the nutrition, that they have painstakingly retreived. This newly discovered bizarre deep ocean relationship may ultimately impact ocean productivity, report researchers from University of Southern Denmark now in the scientific journal Nature.http://phys.org/news295101130.html
BiologyWed, 07 Aug 2013 13:32:23 ESTnews295101130Double effort needed to clean up ThamesThe River Thames will fail to meet pollution standards in 2015 unless farmers use 20 per cent less fertiliser and water companies reduce phosphorus discharges from sewage treatment, according to a new study.http://phys.org/news295075478.html
EarthWed, 07 Aug 2013 07:10:02 ESTnews295075478World changing technology enables crops to take nitrogen from the airA major new technology has been developed by The University of Nottingham, which enables all of the world's crops to take nitrogen from the air rather than expensive and environmentally damaging fertilisers.http://phys.org/news293973986.html
EarthThu, 25 Jul 2013 12:26:42 ESTnews293973986Southern California ozone pollution declining in recent decadesMany studies have documented the decline in ozone pollution and its precursors in the Los Angeles air basin over the past several decades.http://phys.org/news288956895.html
EarthTue, 28 May 2013 10:48:26 ESTnews288956895Fertilizer that fizzles in a homemade bomb could save lives around the worldA Sandia engineer who trained U.S. soldiers to avoid improvised explosive devices (IEDs) has developed a fertilizer that helps plants grow but can't detonate a bomb. It's an alternative to ammonium nitrate, an agricultural staple that is also the raw ingredient in most of the IEDs in Afghanistan.http://phys.org/news285928584.html
EarthTue, 23 Apr 2013 09:36:36 ESTnews285928584Pioneering study calculates Arctic Ocean nutrient budgetThe first study of its kind to calculate the amount of nutrients entering and leaving the Arctic Ocean has been carried out by scientists based at the National Oceanography Centre, Southampton.http://phys.org/news284718762.html
EarthTue, 09 Apr 2013 09:32:51 ESTnews284718762High rates of nitrogen fixation measured in equatorial upwelling regionSurface waters in upwelling regions of the ocean are generally rich in nutrients. Scientists had thought that these areas would have low rates of nitrogen fixation because diazotrophs-microbes that convert nitrogen gas from the atmosphere into usable forms, such as ammonia-could use the nutrients in the water directly instead of having to fix nitrogen gas. However, researchers recently recorded high rates of nitrogen fixation in an upwelling region in the equatorial Atlantic.http://phys.org/news284369285.html
EarthFri, 05 Apr 2013 09:40:02 ESTnews284369285Nonnative salmon alter nitrification in Great Lakes tributariesNonnative species can affect the biogeochemistry of an ecosystem. For instance, Pacific salmon have been introduced as a sport fishery in many streams and lakes beyond their native range, but their introduction may be altering nitrogen cycling in those ecosystems.http://phys.org/news284369230.html
BiologyFri, 05 Apr 2013 08:50:01 ESTnews284369230Tracing nitrate in watershedsPlants need nitrogen to grow, and nitrate is a common fertilizer ingredient, but high levels of nitrate contamination in drinking water sources can cause health problems. It is generally known that nitrogen flows through watersheds from upslope areas down to streams, but the relationships between upslope soil solution or groundwater nitrate concentrations and stream water nitrate levels—and the ways in which land use changes may alter this relationship—are not fully understood.http://phys.org/news282553914.html
EarthFri, 15 Mar 2013 09:00:02 ESTnews282553914Toxic oceans may have delayed spread of complex lifeA new model suggests that inhospitable hydrodgen-sulphide rich waters could have delayed the spread of complex life forms in ancient oceans.http://phys.org/news281275899.html
EarthThu, 28 Feb 2013 12:11:44 ESTnews281275899Study shows pine beetle outbreak buffers watersheds from nitrate pollutionA research team involving several scientists from the University of Colorado Boulder has found an unexpected silver lining in the devastating pine beetle outbreaks ravaging the West: Such events do not harm water quality in adjacent streams as scientists had previously believed.http://phys.org/news277405690.html
BiologyMon, 14 Jan 2013 17:08:38 ESTnews277405690The 'slippery slope to slime': Overgrown algae causing coral reef declines(Phys.org)—Researchers at Oregon State University for the first time have confirmed some of the mechanisms by which overfishing and nitrate pollution can help destroy coral reefs – it appears they allow an overgrowth of algae that can bring with it unwanted pathogens, choke off oxygen and disrupt helpful bacteria.http://phys.org/news267285108.html
EarthWed, 19 Sep 2012 14:52:08 ESTnews267285108Silver nanoparticle synthesis using strawberry tree leafA team of researchers from Greece and Spain have managed to synthesize silver nanoparticles, which are of great interest thanks to their application in biotechnology, by using strawberry tree leaf extract. The new technology is ecological, simple, cheap and very fast.http://phys.org/news261219067.html
NanotechnologyWed, 11 Jul 2012 09:51:17 ESTnews261219067From pomegranate peel to nanoparticlesFood waste is a growing problem in many parts of the world, but discarded fruit peel, in the case of pomegranates, could be put to good use in the burgeoning field of nanotechnology according to research published in the International Journal of Nanoparticles.http://phys.org/news259320003.html
NanotechnologyTue, 19 Jun 2012 10:23:42 ESTnews259320003A genetic alternative to fertilizerSeveral studies have shown that a lack of nitrogen in soils adversely affects crop yields. The modern use of nitrogen fertilizers has improved yields to meet expanding global food demand, but in some cases up to 50% of the nitrogen in fertilizers reaches surrounding water bodies in the form of nitrate, causing pollution. As the use of nitrogen fertilizers is rapidly increasing worldwide each year, there is a fundamental need to understand how plants absorb nitrate, and how this absorption can be improved in crops.http://phys.org/news257762047.html
BiologyFri, 01 Jun 2012 10:00:02 ESTnews257762047From decade to decade: What's the status of our groundwater quality?There was no change in concentrations of chloride, dissolved solids, or nitrate in groundwater for more than 50 percent of well networks sampled in a new analysis by the USGS that compared samples from 1988-2000 to samples from 2001-2010. For those networks that did have a change, seven times more networks saw increases as opposed to decreases.http://phys.org/news255014546.html
EarthMon, 30 Apr 2012 14:30:01 ESTnews255014546Nitrate in drinking water poses health risks for rural CaliforniansOne in 10 people living in California's most productive agricultural areas is at risk for harmful levels of nitrate contamination in their drinking water, according to a report released today by the University of California, Davis. The report was commissioned by the California State Water Resources Control Board.http://phys.org/news250831433.html
EarthTue, 13 Mar 2012 04:40:02 ESTnews250831433Metamaterials may advance with new femtosecond laser techniqueResearchers in applied physics have cleared an important hurdle in the development of advanced materials, called metamaterials, that bend light in unusual ways.http://phys.org/news250426284.html
NanotechnologyThu, 08 Mar 2012 10:51:58 ESTnews250426284Prairie restoration also helps restore water qualityU.S. Department of Agriculture (USDA) scientists are studying the overall improvement in water quality when native prairie vegetation is restored to fields once cropped with corn and soybeans. Agricultural Research Service (ARS) scientists in Ames, Iowa, were part of a team that examined changes in groundwater during prairie establishment at the Neal Smith National Wildlife Refuge near Prairie City, Iowa. ARS is USDA's chief intramural scientific research agency.http://phys.org/news250416705.html
EarthThu, 08 Mar 2012 08:50:02 ESTnews250416705In forests, past disturbances obscure warming impactsPast disturbances, such as logging, can obscure the effects of climate change on forest ecosystems. So reports a study just published in the Proceedings of the National Academy of Sciences. The paper, exploring nitrogen dynamics, found that untangling climate impacts from other factors can be difficult, even when scientists have access to decades of data on a forest's environmental conditions.http://phys.org/news250161431.html
EarthMon, 05 Mar 2012 09:17:21 ESTnews250161431New study sheds light on evolutionary origin of oxygen-based cellular respirationResearchers at the RIKEN SPring-8 Center in Harima, Japan, have clarified the crystal structure of quinol dependent nitric oxide reductase (qNOR), a bacterial enzyme that offers clues on the origins of our earliest oxygen-breathing ancestors. In addition to their importance to fundamental science, the findings provide key insights into the production of nitrogen oxide, an ozone-depleting and greenhouse gas hundreds of times more potent than carbon dioxide.http://phys.org/news246459096.html
ChemistrySun, 22 Jan 2012 13:00:18 ESTnews246459096What are the prospects for sustaining high-quality groundwater?Intensive agriculture practices developed during the past century have helped improve food security for many people but have also added to nitrate pollution in surface and groundwaters. New research has looked at water quality measurement over the last 140 years to track this problem in the Thames River basin.http://phys.org/news243512481.html
EarthMon, 19 Dec 2011 10:22:24 ESTnews243512481Graphene's 'Big Mac' creates next generation of chipsThe world's thinnest, strongest and most conductive material, discovered in 2004 at the University of Manchester by Professor Andre Geim and Professor Kostya Novoselov, has the potential to revolutionize material science.http://phys.org/news237383086.html
NanotechnologySun, 09 Oct 2011 13:00:17 ESTnews237383086Nitrate levels rising in northwestern Pacific ocean: studyChanges in the ratio of nitrate to phosphorus in the oceans off the coasts of Korea and Japan caused by atmospheric and riverine pollutants may influence the makeup of marine plants and influence marine ecology, according to researchers from Korea and the U. S.http://phys.org/news235898934.html
EarthThu, 22 Sep 2011 14:00:09 ESTnews235898934Nitrogen in the soil cleans the airEutrophication harms the environment in many ways. Unexpectedly, nitrogen fertilizer may also be positive for the environment. And even acidic soils, promoting the destruction of forests, can have a positive effect. Researchers from the Biogeochemistry Department at the Max Planck Institute for Chemistry in Mainz found out that nitrogen fertilizer indirectly strengthens the self-cleaning capacity of the atmosphere. Their study shows that nitrous acid is formed in fertilized soil and released to the atmosphere, whereby the amount increases with increasing soil acidity. In the air, nitrous acid leads to the formation of hydroxyl radicals oxidizing pollutants that then can be washed out. Previously, this nitrogen-effect has not been taken into account by geoscientists. The gap has now been closed by the Max Planck researchers.http://phys.org/news232967542.html
EarthFri, 19 Aug 2011 10:12:56 ESTnews232967542Nitrogen guidelines for cereal foragesCereal grains such as wheat and barley are viable alternative hay crops and can provide valuable grazing opportunities. Due to drought resistance, good yields and ability to break pest cycles of perennial crops, annual forages can be a good fit in northern Great Plains production systems. An ongoing study provides preliminary nitrogen guidelines for some annual forage crops in Montana.http://phys.org/news228122786.html
EarthFri, 24 Jun 2011 08:32:36 ESTnews228122786